EP2558781A1 - Drallerzeuger für einen brenner - Google Patents
Drallerzeuger für einen brennerInfo
- Publication number
- EP2558781A1 EP2558781A1 EP11711807A EP11711807A EP2558781A1 EP 2558781 A1 EP2558781 A1 EP 2558781A1 EP 11711807 A EP11711807 A EP 11711807A EP 11711807 A EP11711807 A EP 11711807A EP 2558781 A1 EP2558781 A1 EP 2558781A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- swirl
- hub
- swirl generator
- burner
- bearing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/04—Air inlet arrangements
- F23R3/10—Air inlet arrangements for primary air
- F23R3/12—Air inlet arrangements for primary air inducing a vortex
- F23R3/14—Air inlet arrangements for primary air inducing a vortex by using swirl vanes
Definitions
- Swirl generator for a burner The invention relates to a swirl generator, in particular for a burner in a gas turbine.
- the invention further relates to a burner and a gas turbine.
- the burner 0,276,696 Bl described in EP is a hybrid ⁇ burners for premix operation with gas and / or oil, as applied to the ⁇ particular for gas turbine plants.
- the burner comprises a central fuel supply arrangement, in which also a pilot burner system is integrated, which is operable with gas and / or oil as a so-called diffusion burner or as a separate premix burner.
- a pilot burner system is integrated, which is operable with gas and / or oil as a so-called diffusion burner or as a separate premix burner.
- the central fuel supply arrangement is surrounded by a main burner system, which has an air supply annular channel system with therein a swirl blading with a plurality of blades and nozzle pipes arranged upstream of the blades for premixing with gas on ⁇ .
- inlet nozzles for oil in the area of the swirl vanes are present in the fuel supply arrangement, which allow premixing of the main air flow with oil.
- the fuel gas can also be injected through arranged in the swirl blades nozzle openings in the air duct, as described for example in EP 0 580 683 Bl.
- a further gas injection be used by the vane to a gas injection through the blade as described in EP 0580683 Bl addition.
- the object of the invention is to provide a swirl generator with improved storage for swirl blades. According to the invention this object is achieved by the Vorrich ⁇ processing according to claim 1. Advantageous developments of the invention are defined in the dependent claims.
- the floating bearing has a crowned bearing surface instead of a cylindrical, the following is achieved:
- spherical bearing surfaces allow a tilt in the bearing on the outside of the swirl generator without increasing the bearing clearance.
- the movable bearing is arranged in the outer boundary wall. If the blades are connected to the hub via a fixed bearing, fuel can be supplied to the supply channels in the blades centrally via distribution channels in the hub in order to inject fuel into the airflow via outlet nozzles in the supply channels.
- an inner part of the floating bearing on the spherical bearing surface and an outer part of the movable bearing a zy ⁇ - cylindrical bearing surface.
- the radius of the spherical bearing surface is interpreted according to the pivot point of the tilt, it may be advantageous if the spherical bearing surface is spherical ⁇ shaped.
- the radius can also vary as long as jamming in the floating bearing is excluded, expediently, the radius of the spherical bearing surface is equal to or greater than half a diameter of the outer part of the floating bearing.
- the inner part is formed by the surface of a blade nut, which can be screwed to the swirl blade.
- the swirl vane comprises a first and a second fuel channel, which can better control the emissions compared to a single fuel channel and further increase the combustion stability.
- the swirl blade by means formed as cylindrical hollow elements sliding seats, within which the fuel channels extend, is connected to the hub, so that the fuel channels with gas distributor ⁇ channels of the hub are in flow communication.
- such a swirl generator is seen in a burner before.
- the burner is further provided in a gas turbine.
- FIG. 1 shows the burner according to the invention in a highly schematic schematic diagram
- FIG. 2 shows a side view of a gas turbine premix burner and in particular of the swirl generator
- FIG. 3 shows a top view of a gas turbine premix burner and in particular of the swirl generator
- FIG. 4 shows a section through a swirl generator of a gas turbine premix burner with swirl blade and egg ⁇ nem arranged in the swirl vane Brennstoffka ⁇ nal and floating bearing according to the prior art
- Figure 5 shows a section through a swirl generator according to the invention with plain bearing with one side spherical bearing surface.
- FIG. 1 shows, schematically and by way of example, the burner 2 according to the invention in a highly schematized schematic diagram on the basis of which the concept underlying the burner 2 is described.
- the burner 2 according to the invention which can optionally be used in conjunction with a plurality of similar burners, for example in the combustion chamber of a gas turbine plant, comprises an inner pilot burner system and a main burner system concentrically surrounding the pilot burner system. Both the pilot burner system and the main burner system may optionally be operated with gaseous and / or liquid fuels, such as natural gas or fuel oil.
- the pilot burner system includes an internal oil supply passage
- the pilot burner system has a combustion chamber 17 facing the outlet opening 18, in whose area a swirl blading 19 in the air supply channel angeord ⁇ net is. Gas can be injected from the inner gas supply channel 15 in the area of the swirl blading or upstream of the swirl blading into the air supply channel 16 by means of nozzle openings 20. Oil from the oil supply channel can be injected by means of oil nozzles 21 downstream of the swirl blading into the supplied air or the supplied inert material.
- the task of the pilot burner system is to maintain the Bren ⁇ ner in a stable combustion operation, since this is usually operated with a prone to instability lean mixture.
- the pilot burner system can be operated in a conventional manner with oil and / or gas as a diffusion burner, in which the fuel is injected directly into the flame.
- the main burner system surrounding the pilot burner system comprises a radial outer air supply channel 22, also annular called air channel through which a plurality of swirl vanes 5 extend a swirl blading.
- These swirl vanes 5 have first gas nozzles 23 and second gas nozzles 24, through which fuel gas can be injected into the air flowing in through the radial air supply duct 22.
- Air supply duct 22 flowing air can be injected by means of oil nozzles 25 to ⁇ the oil.
- oil nozzles 25 to ⁇ the oil.
- the first gas nozzles 23 and second gas nozzles 24 located in the swirl blades 5 and the oil nozzles 25 are supplied with fuel via a radially inner fuel supply arrangement, the so-called hub 3.
- first and second annular gas distribution channels 26 and 27 are angeord ⁇ net, which supply the gas nozzles 23 and 24 with gas.
- an annular oil distribution channel 28 is arranged ⁇ , which supplies the oil nozzles 25 with oil.
- the gas distribution channels 26, 27 and the oil distribution channel 28 are supplied via gas supply ⁇ supply channels 29, 30 or via an oil supply passage 31 with the appropriate fuel.
- For the oil supply channel 31 is a separate oil supply pipe 32 before.
- FIG. 2 shows a side view of a known gas turbine premix burner 2 and in particular of the swirl generator 1. Swirl vanes 5 are welded on the hub side 3 of the swirl generator 1 (fixed bearing 6) and on the outside of the swirl generator 1
- FIG. 3 shows a top view of the gas turbine premix burner 2 of FIG. 2.
- FIG. 4 shows an enlarged partial cross-sectional view through a known burner hub 3 of a gas turbine premix burner 2 with swirl blade 5 and one in FIG
- Swirl blade 5 arranged fuel channel 11 with the The swirl blade 5 is mounted on the hub side of the ⁇ type with a sliding seat in the hub 3, that the fuel passage 11 of the swirl blade 5 is connected to an annular channel 26 in the hub 3, which via a separate pipe connection 29 (not shown in FIG. 4).
- the arrangement is circular, so that the ring channel 26 as Vietnamese securedd vorzustel ⁇ len has.
- the swirl vane 5 On the side of the outer boundary wall 4, the swirl vane 5 has a fit in the form of a vane nut 10 which is screwed onto the radially outer end of the swirl vane 5 (and secured against loosening by swirl points after alignment of the swirl vane 5) and with its surface cylindrical inner bearing surface 9 of a movable bearing 7 according to the prior art forms.
- Figure 4 shows the axial movement 33 of the swirl blade 5 in the floating bearing 7 due to thermal expansion.
- FIG. 5 shows a schematic diagram of a swirl blade 5 with two integrated, independently controllable fuel channels 11, 12.
- the first fuel channel 11 with the outlet nozzles 23 can, for example, for injecting a first medium and the second fuel channel 12 via the outlet nozzles 24 can for injecting a second medium be used.
- both media to be injected through the fuel conduits 11, 12 of the swirl vanes 5 will be gaseous, e.g. the one natural gas and the other coal gas.
- an inert material such as water vapor can be injected via these outlet nozzles 23, 24 if necessary.
- radial heat movements 34 can now result in addition to the axial heat movements.
- a thus caused clamping in floating bearing 7 with cylindrical bearing surface 9 can now by the inventive solution of the problem, in which the movable bearing 7 has a spherical bearing surface 8, can be avoided.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010027808A DE102010027808A1 (de) | 2010-04-15 | 2010-04-15 | Drallerzeuger für einen Brenner |
PCT/EP2011/054237 WO2011128179A1 (de) | 2010-04-15 | 2011-03-21 | Drallerzeuger für einen brenner |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2558781A1 true EP2558781A1 (de) | 2013-02-20 |
EP2558781B1 EP2558781B1 (de) | 2015-07-15 |
Family
ID=43881219
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11711807.5A Not-in-force EP2558781B1 (de) | 2010-04-15 | 2011-03-21 | Drallerzeuger für einen brenner |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2558781B1 (de) |
CN (1) | CN102859282B (de) |
DE (1) | DE102010027808A1 (de) |
WO (1) | WO2011128179A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102014201386A1 (de) * | 2014-01-27 | 2015-07-30 | Siemens Aktiengesellschaft | Pilotbrenner als Bestandteil einer Brenneranordnung für die Druckvergasung fester und flüssiger Brennstoffe |
EP2927598B1 (de) * | 2014-03-31 | 2018-12-19 | Siemens Aktiengesellschaft | Verfahren zum Austauschen eines Swirlers |
DE102014206139A1 (de) * | 2014-04-01 | 2015-10-01 | Siemens Aktiengesellschaft | Brennerkopf |
DE102015204594A1 (de) * | 2015-03-13 | 2016-09-15 | Siemens Aktiengesellschaft | Monolithische Brennerdüse |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0276696B1 (de) | 1987-01-26 | 1990-09-12 | Siemens Aktiengesellschaft | Hybridbrenner für Vormischbetrieb mit Gas und/oder Öl, insbesondere für Gasturbinenanlagen |
CH676735A5 (de) * | 1988-08-03 | 1991-02-28 | Asea Brown Boveri | |
DE59204270D1 (de) | 1991-04-25 | 1995-12-14 | Siemens Ag | Brenneranordnung, insbesondere für gasturbinen, zur schadstoffarmen verbrennung von kohlegas und anderen brennstoffen. |
EP1507119A1 (de) * | 2003-08-13 | 2005-02-16 | Siemens Aktiengesellschaft | Brenner und Verfahren zum Betrieb einer Gasturbine |
EP1614967B1 (de) * | 2004-07-09 | 2016-03-16 | Siemens Aktiengesellschaft | Verfahren und Vormischverbrennungssystem |
EP2161502A1 (de) * | 2008-09-05 | 2010-03-10 | Siemens Aktiengesellschaft | Vormischbrenner zur Verbrennung eines niederkalorischen sowie hochkalorischen Brennstoffes |
-
2010
- 2010-04-15 DE DE102010027808A patent/DE102010027808A1/de not_active Ceased
-
2011
- 2011-03-21 EP EP11711807.5A patent/EP2558781B1/de not_active Not-in-force
- 2011-03-21 WO PCT/EP2011/054237 patent/WO2011128179A1/de active Application Filing
- 2011-03-21 CN CN201180018985.5A patent/CN102859282B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2011128179A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102010027808A1 (de) | 2011-10-20 |
EP2558781B1 (de) | 2015-07-15 |
WO2011128179A1 (de) | 2011-10-20 |
CN102859282A (zh) | 2013-01-02 |
CN102859282B (zh) | 2015-01-07 |
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